The choice to use Terminate Ritual has no effect on the batch. As long as you proceed to the next ritual within the allotted time after terminating the ritual the batch remains 'open'.
So assuming I still had time, I would be able to restart the same ritual as part of the batch?
Also the modification says 'at any time' so I am assuming one could even fail their success roll, roll for a flaw, determine what the result of the flaw would be and then decide to Terminate Ritual because you had received a 'Ritual fails' flaw?